A mid-20th-century orthodontic band selection tray, used to organize metal molar bands by size for the maxillary and mandibular teeth. Dental Clinic in the Diefenbunker Step back in time to the Diefenbunker’s dental clinic—a small but fascinating part of a four‑storey underground reinforced concrete bunker hidden below Carp, Ontario, just outside Ottawa. The Diefenbunker, or the Canadian Forces Station (CFS) Carp as it was officially called, was built between 1959 and 1961, at the height of the Cold War. It was engineered to withstand a five‑megaton nuclear blast from approximately 2 km away and to shelter key political and military personnel during a nuclear crisis. Equipped with a corrugated steel blast tunnel and massive blast doors, air filtration systems, its own utilities and provisions for up to 535 people, it was ready at a moment’s notice to lock down in case of a nuclear attack. The site served continuously as a military communications base until it was decommissioned in 1994. All photos courtesy of the Diefenbunker: Canada’s Cold War Museum. 20 | 2026 | Issue 1
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